JP2002345518A - J-shape multipurpose built-in part clasp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clasp which prevents an engagement projection from coming off an engagement groove, prevents an ornament from falling and getting lost due to loosening of the engagement of a connector, and facilitates putting on and off of a small precious metal ornament. SOLUTION: The J-shape multipurpose built-in part clasp facilitates mounting and dismounting of a cylindrical built-in part by providing a J groove on the pushing-in side of a connection and can be used also for a pearl necklace, a precious metal necklace, a broach, or a pendant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular internal part used for connecting various items such as a pearl necklace clasp, a precious metal necklace, and a broach.

[0002]

2. Description of the Related Art Conventionally, metal fittings used for connecting accessories and the like include: Japanese Utility Model Publication No. 58-16653;
Reference numeral 7 denotes a cylindrical fitting, a pressing body fitted into a spring-type fitting and urged in the direction of the opening of the cylindrical fitting by a spring, and a member projecting from the opening of the cylindrical fitting at a predetermined interval. At the other end of the necklace or the like, a push-in fitting to be fitted into the tubular fitting, a vertical groove formed on the outer periphery of the tubular fitting to guide the engaging projection, and a peripheral portion communicating with the vertical groove are provided. In some cases, a groove and an engagement groove formed at an appropriate position in the circumferential groove are provided.

[0003] In the publication of Japanese Patent Application Laid-Open No. 7-213317, a connecting fitting used for a connecting portion of an accessory such as a necklace is a tubular fitting at one end of the accessory and is fitted into the tubular fitting, and the opening of the tubular fitting is opened by a spring. A pressing body urged in a partial direction, an engagement projection provided at an opening of the cylindrical fitting at a predetermined interval, and a push fitting fitted into the tubular fitting at the other end of the accessory; In some cases, a vertical groove formed on the outer periphery of the cylindrical fitting to guide the engaging protrusion, a peripheral groove communicating with the vertical groove, and a plurality of engaging grooves formed at appropriate positions in the peripheral groove are provided.

[0004]

However, in the above-mentioned conventional example of Japanese Utility Model Publication No. 58-16653, the engaging projection is easily disengaged from the engaging protruding groove, and the fitting is disengaged during use, and the personal accessory falls off. There was a drawback that accessories were easily lost.

[0005] In the above-mentioned prior art patent publication No. 7-213317, the point that the engaging projection is hard to come out of the engaging groove and the accessory is not lost due to a device has been improved.
Precious metal accessories are small and difficult to remove because they are difficult to remove.

[0006]

DISCLOSURE OF THE INVENTION The present invention is intended to solve the conventional disadvantage, and the engaging projection is hard to fall out of the engaging groove, the connecting fitting is disengaged, and the accessory is dropped and lost. In addition, it is a tubular built-in component that provides a clasp that is easy to attach and detach even for small noble metal accessories.

That is, the tubular built-in part of the present invention is a built-in connecting part that fits in an accessory, such as a pearl necklace clasp, a precious metal necklace, a brooch, a pendant, etc., and is formed by a spring fitted in the tubular part. And an engaging projection projecting at a predetermined interval from the opening of the tubular part. It is characterized in that a push-in part to be fitted into the cylindrical part and a retaining hole at the tip of the J-groove communicating with the J-groove formed on the inner periphery of the cylindrical part and guiding the engaging projection are provided. is there.

Further, in the pearl necklace clasp according to the present invention, a connecting part is mounted on the pearl body, and a tail-shaped projection is provided on a pearl provided on the push-in part, and a round hole is provided at the tip thereof. The tail wing is provided to fix the pearl, the round hole at the tip of the projection is a part to connect the thread of the necklace, and the inside of the round hole is smoothly applied to prevent thread breakage.

Further, the present invention can bring about a change by changing the length of the pushing part of the connecting part.

Further, in the prior invention, since the engaging projection projecting from the opening of the cylindrical part of the connecting part is provided, it is not easy to insert the pressing body and the spring into the cylinder. . According to the present invention, insertion and removal of the pressing body and the spring at the opening of the connecting part are facilitated.

Thus, after the tubular component is brazed and fixed to the decorative article main body, the pressing body and the spring can be inserted. This is very important in the process of manufacturing the product and is very useful in the repair of decorative articles.

[0012]

Next, the present invention will be described with reference to the drawings.

FIG. 1 shows a state in which the cross section of the cylindrical part and the side surface of the pressed part are connected to each other. Parts on the convex side 2 shown in FIG.
A and part B on the concave side 1 shown in FIG. A part B is provided with a retaining hole 10 at the tip along the J-shaped groove 6 of the part A projection partial view.
The protrusion 9 in FIG. 3 is guided to the front end retaining hole 10 of the groove, whereby both are easily and reliably fixed.

The protruding part enters the retaining hole 10 at the tip of the J-shaped groove indicated by reference numeral 10 in part A of FIG.

FIG. 2 Grooves 6 formed on both sides of part A2 form a natural J-shaped curve. FIG. And stays by the pushing force of the spring inserted along the J-shaped groove of the convex portion 2.

When detaching, it is possible to easily remove it by using the force of the spring 4 by twisting the part A in the opposite direction to the time of insertion while further pushing it into the part B.

By attaching the tail wing 5 of the part A in FIG. 2, the pearl can be fixed.

2, the length of the part 2 is reduced as shown in FIG. 5, a spherical surface is formed at the tip, and the R groove 12 is cut to the outer periphery at the base, so that the joint part can be freely separated. Can bring about movement.

[0019]

According to the present invention, a built-in component such as a pearl necklace, a precious metal necklace, and a personal accessory is manufactured, but by using such a structure, not a standardized clasp but a pearl necklace product body alone is manufactured. It is the invention of the clasp that has made it possible to expand the range of the design by attaching the built-in components later.

By providing the J-shaped groove according to claim 1, the built-in part clasp of the present invention can be smoothly and easily attached and detached by the force of a spring, and can be attached to pendants, brooches and other jewelry later. By being attached, they can be exchanged and used in various ways. The clasp with a built-in component of the present invention fixes the pearl by attaching the tail fin according to the second aspect, and since the inside of the thread fastening at the tip is smooth, thread breakage can be prevented.

FIGS. 7 and 8 show examples of use of the present invention.

As described above, the J-type multi-purpose clasp of the present invention can be designed and developed for a new accessory and can be attached to an old accessory, so that reforming and dual use can be realized at low cost.

[Brief description of the drawings]

FIG. 1 is a drawing in which a cross section of a tubular part of a clasp built-in part of the present invention is connected to a side face of a push-in part.

FIG. 2 is a side view of a part-A push-in part.

FIG. 3 is a sectional view of a part-B cylindrical part.

FIG. 4 is a partial cross-sectional view taken in the direction of arrows AA in FIG. 1;

FIG. 5 is a partial cross-sectional view taken along the arrow direction BB of FIG. 1;

[Fig. 6] Shorten the indentation part, apply a spherical surface to the tip, and set R at the base.
It is a side view which gave a groove.

FIG. 7 is a diagram showing the positions of the J-shaped engraved grooves in detail A to E in FIGS. 1A-A and BB.

FIG. 8 is a diagram showing an application example in which a press-fit part of a combination of a part and a product is lengthened.

FIG. 9 is a diagram showing an application example in which a press-fitted part of a combination of a part and a product is shortened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outside of cylindrical part 2 Push-in part 3 Pushing body 4 Spring 5 Tail 6 J-shaped engraving groove 7 Show pearl 8 Thread hole 9 Engagement projection 10 J-groove tip hole 11 Pearl Uke 12 R-groove for closet parts

Claims (2)

[Claims] 1. A press-type clasp part with a built-in cylindrical spring utilizing a J-shaped groove. 2. A press-type clasp with a built-in tail-type thread-clamping tubular spring for fixing a pearl.